Teacher ResourcesEdmodo : Very easy format to gather, store, and share websites, files, and links for your students to access. Also lets you post assignments, polls, messages, and notes quickly and efficiently. Students do not need an email account to access, and you control who sees the content for each class.
Diigo: "Diigo provides a browser add-on that can really improve your research productivity. As you read on the web, instead of just bookmarking, you can highlight portions of web pages that are of particular interest to you. You can also attach sticky notes to specific parts of web pages. Unlike most other web "highlighters" that merely clip, Diigo highlights and sticky notes are persistent in the sense that whenever you return to the original web page, you will see your highlights and sticky notes superimposed on the original page, just what you would expect if you highlighted or wrote on a book! Moreover, all the information -- highlighted paragraphs, sticky notes, and the original url -- are saved on Diigo servers, creating your personal digest of the web, your own collection of highlights from the web - ones that are meaningful to you! You can easily search, access, sort and share this collection from any PC or even iPhone."
Google Products: It's way more than just a search engine! Google offers a huge array of products that let you and your students do anything from following the financial markets, to searching scholarly articles, to editing photos, and more. Take some time to explore all of the free tools available.
Twitter : Follow the best minds in your field. Get real time information and updates from institutions, publications, and experts in education or your subject area. Easy to sign up and get started.
Tiny URL: Allows you to take a long website address and make it short. Saves a lot of time if you are having students type in the address themselves. The new url you create is even customizable!
Glogster: Create a poster using text, images, music, video.
Promethean Planet: Resources for the Promethean board. Download flipcharts, resource packs and much more! Keep ini mind that once you have downloaded flipcharts, you may edit them. So even if you don't like everything about a flipchart that someone else posted on the planet, download it and then change it to suit your needs!
Khan Academy: Over 2,400 instructional videos covering many topics in almost every subject area. Great for brushing up, finding a different approach to teaching a topic, showing to your class, or just learning something new.
NLVM: This National Library of Virtual Manipulatives has some fantastic hands-on math resources! The manipulatives are indexed by age as well as by category to make it easy to locate what you need.

EdGames: If you are looking for educational games, check out this sight. It contains PowerPoint games, game templates, Excel games, Word games and Utilities/Timers. Most of the games on this sight would work well as review activities on the Promethean board. Some require no preparation, just have a sheet of vocabulary or review questions in your hand!

Class Tools: Create free educational games, quizzes, activities and diagrams in seconds! Host them on your own blog, website or intranet! No signup, no passwords, no charge!

Teacher Tube: It's like Youtube for educators. Videos submitted by educators for educators to use in their classrooms.

Survey Monkey: This site will help you develop and conduct an online survey. It's a quick way to get student feedback and gather data. The BASIC plan is free.

Tagxedo: It turns words -- famous speeches, news articles, slogans and themes, student responses -- into a visually stunning word cloud. Words are individually sized appropriately to highlight the frequencies of occurrence within the body of text.

Skype: Connect and share with anyone around the world with a live video feed. Bring the expert into your classroom.

Worksheet Works: Free, printable worksheets! Math, Language Arts, Geography, & Puzzles.

GoAnimate: Make easy custom animations for your class. E-mail address needed for sign-up.

Timetoast: Create interactive timelines that can be shared on the web.

Online Converter: Very easily convert media files from one format into another.

Fold 3: Scans of original historical and military records. Have students experience what the actual documents look like!

Answer Garden: Free, easy online tool for brainstorming, quizzing, or simply answering a question. You post a question to the class, and they respond.

PBS Teacher: Videos and other resources for a large variety of subjects and topics in a searchable and easily usable format.

Holt Interactive Graphic Organizers: Interactive graphic organizers. Click on a graphic organizer to download a PDF of it. Once you’ve downloaded an organizer, type in your comments and print it out. Many of the graphic organizers include teaching notes with lessons and tips on how to use graphic organizers in the classroom.